Links are hard to see

Is there any way to make the gray links (that I have on the right side of my page) black or just more pronounced? The links are under the categories “Pages” and “Recent Posts” (for example). I have no coding experience at all. Many thanks!

Add this code to Theme Options - Other - Custom CSS

#secondary .widget a {
    color: #111;

Thank you so much!! Is there a way to make the PAGES, CATEGORIES, etc. headers another color (red)?

This should get the job done:

#secondary .widget a, 
#secondary .widget h3{
    color: #D33;

Thank you! But when I added it after the first code, it made everything red, not just the headers. Is there a way around that?